You keep sweating it.
I'll keep doing what I do.
On Monday, I was smacking steel at 275, 320, and 400 yards with the 'battle' setting (300 meters) on one of my 1916 Spanish Mausers and "anemic" 7x57mm PPU 139 gr ammo.
The "underpowered" ammo was such a big deal that we had to hold an entire 12 INCHES high to hit the 400 yard gong.
The humanity!!...
And your 7mm Mauser is relevant to 8X57 how exactly?
We are not talking about 7X57, we are talking about 8X57. There is not a huge difference between SAMMI and CIP specs for 7mm Mauser ammo. Max C.I.P. ~56Kpsi, SAAMI ~51K psi) Prvi Partisan lists both 7mm Mauser and 7X57 on their web site, assumingly for US and other markets, but if you look the specifications are the same for both, (139gr SP @ 810 M/S or 173gr @ 750 M/S).
CIP specs for both are the same, because the rounds are contemporaries made to shoot in the same rifles.
There is a huge difference in SAMMI vs CIP specs for 8mm Mauser, as I mentioned above.
me said:
US SAMMI spec "8MM Mauser", which has a max pressure of 35K psi, and the CIP "8x57 IS" which has a max pressure of ~56K psi
In the Prvi ammo the US Spec stuff is ~250 FPS slower with the same bullet.
So yes, underpowered.
GarandTd said:
What about Hornady 8x57 vintage match 196 grain? I believe that's full power, isn't it?
Hornady and Nosler seem to be the only US folks making "real" 8x57 ammo, Hornady has two options, a 195 hunting bullet and a 196 gr match, both @ 2500 FPS, which is pretty close to the 1933
s.S. Patrone military load.
Nosler has a 200gr AccuBond or Partition at 2475 fps, and a 180gr Ballistic tip at 2600 FPS, but they are really proud of them, at about $2.50 per round.